Attachment for lathe-machines.



PATENTE 15911.26, 1904.

ULT.

ATHE MACHINES.

D NOV. 1, 1802.

' I J. DENA ATTACHMENT lFR L APrPLmATloN FIL Patented April 26, 1904.

PATENT OFFICE.

JOSEPH DENAULT, OE NEV7r LONDON, CONNECTICUT.

ATTACHMENT FOFI LATHEMACH|NES.

SPECIFICATION forming part of Letters Patent No. 758,238, dated April 26, 1904.

Application tiled November I, 1902. Serial No. 129,711. (No model.)

To all whom, it may concern:

Be it known that I, JOSEPH DENAULT, a citizen of the United States, residing at New London, in the county of New London and State of Connecticut, have invented a new and useful Attachment for Lathe-Machines, of which the following is a specification.

This invention is an improved lathe attachment particularly adapted for straightening rods or bars; and the invention consists in the novel features of construction, combination, and arrangement, all of which will be fully described hereinafter and pointed out in the claims.

In the drawings forming part of this specification, Figure l is a perspective view showing my improvement, the rod or bar to be straightened being shown therein. Fig. 2 is a vertical sectional view. Fig. 3 is an end view.

In carrying out ,my invention I employ a metallic block A, which has a longitudinal bore or chamber A', and this block A rests securely on the sliding tool-block B, which slides upon the usual guides of a lathe-machine.

.The block A is formed with depending arms A2, one at each end, and through which pass the screws O, carrying swiveling brackets D at their upper ends, in which are journaled theQollers E. The arms form shoulders at their inner upper portions which engage with opposite sides of the tool-block, and thereby cause the block A to move with the tool-block even though it be not lixedly secured thereto, the rigidity of the bar preventing it from' moving upward off the tool-block. This construction permits or' the block being quickly applied to and removed from the tool-block and also permits of the screws being located at a point above and between the ways oil the lathe, whereby the adjusting means may extend below the tool-block without interfering with any part of the lathe. Hand-wheels F are rigidly connected to the lower ends of the screws, by means of which the screws can be adjusted to any desired point. The screw Gr passes centrally through the top of the block and carries a bracket H at its lower end in which is journaled the rollers I, and a hand- Wheel K is securely fastened upon the topor upper end of the screw G. If necessary, a

`are adjusted so that they just barely come in contact with the rod L. The tool-block B is then moved along the guideways in any suitable manner, and the rod being rotated from the lathe-head itis obvious that all bends or uneven places upon the rod or bar will be quickly and easily straightened out.

Having thus fully described my invention, what I claim as new, and desire lto secure by Letters Patent, is-

1. An attachment for lathes comprising a vblock provided with a longitudinal bore and having an arm at each end, a screw through each arm and a screw through the top intermediate the end screws, a bracket on the end of each screw and rollersin each bracket.

2. An attachment for lathes comprising a block provided with a longitudinal bore and having a laterally-extending depending arm at each end, the upper inner portions of said arms forming shoulders for engaging with a tool-block, a screw through each arm and a screw through the top of the block intermediate the end screws, a swiveling bracket on the inner end of each screw, and rollers in each bracket.

3. The combination with a tool-block, of a longitudinally-bored block arranged thereon, and having laterallyprojecting [depending arms, of a screw passing centrally through the top of the block and provided with a handwheel at its upper end, and a bracket at its lower end, the rollers journaled in the bracket, the screws passing through the arms and having hand-wheels at their lower ends, brackets at their upper ends, and rollers journaled in the brackets, for the purpose specied.

JOSEPH DENAULT.

Vitnesses: f

THOMAS Roenes, WILLIAM Roenes. 

